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以下列材料分别组成相同规格的四个磁路,磁阻最大的材料是
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以下列材料分别组成相同规格的四个磁路,磁阻最大的材料是
A、铁
B、镍
C、黄铜
D、钴
时间:2021-09-02 13:35
关键词:
联大
华北水利水电大学
电路原理
答案解析
C
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